Archimedes's Links
He's the oil to Ylli's water, they don't mix well. It's surprising that they are friends (Mostly thanks to Jasper).
If it wasn't for Jasper being the glue to this friendship, he would not be willing to be in Archimedes' presents. Though over time, he would like to think they are decent friends in terms of bonding over ill fated curses and keeping an eye Jasper.